Prism 6∆ | The 3 degrees of Binocularity | CentroStyle - Around People
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Prism 6∆

Gallery ref. 08307

Prism 6∆

1° DEGREE OF BIOCULARITY
  1. PURPOSE OF THE VON GRAEFE TEST:
    Quantify any horizontal heterophoria and establish the absence of suppression by detecting the presence of diplopia
  2. Performed in free space, either at a distance or close up, the prism with a vertical base is placed over the dominant eye in order to obtain the dissociation of a fixation sight (usually used is a vertical line of letters with AV < 0.2 compared to the best perceived)
  3. The test is performedin combination with horizontally based Berens prisms for phoria quantification.

    TO BE USED WITH:

    Ref. 08300 Berens prisms


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REF. 08307
Reading chart in washable flexible plastic material. Find an optical practice

Reading chart in washable flexible plastic material.

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